All topics · Step 4: Invest every month

Index funds.

The simple way most people should invest: own a small slice of thousands of companies, for a very low fee.

Free tool

Growth calculator

$
$
Real returns go up and down. This is an average, not a promise.
Could grow to

You put in
Growth
Times your money

Monthly compounding, money added at the end of each month. Before fees, taxes and inflation.

Want the whole investing plan in one short guide?See the Invest Simply ($12)

Change any number and the result updates. Nothing you type leaves your device.

Remember

Three things to know.

Own the whole market

An index fund holds every company in a market, so you don't have to pick winners.

Keep the fee tiny

Look for funds with yearly fees well under 0.3%. Our fees lesson shows why it matters.

Buy every month, hold for years

Set it up once, invest automatically, and leave it alone.

Lessons

20 lessons, 30 seconds each.

One idea per video. Swipe to see them all.

New lessons every week on TikTok, YouTube and Instagram.

Go further

Tools for this topic.

Optional. Everything above stays free. Pay once, download instantly, keep forever.

Free · instant download

The Start Here Kit

A one-month spending tracker and a $1 a day savings challenge. Works in Excel and Google Sheets. Free to share.

Get it free
Questions

Good questions.

What is an index fund?
A basket that holds every company in a list, like the 500 biggest US companies or the whole world. When the market grows, you grow with it.
Which one should I buy?
Many beginners choose one low-cost fund that owns the whole world. Our guide Invest Simply explains the options by country.
Is it safe?
It goes up and down, sometimes a lot. Over long periods, broad stock markets have grown, but nothing is guaranteed.
Why not pick stocks myself?
Most professional fund managers fail to beat the index over long periods. Owning the whole market is simpler and usually cheaper.